如何让主窗口等待新打开的窗口在 C# WPF 中关闭？
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How to make main window wait until a newly opened window closes in C# WPF?
提问by Arjun Ajith
I am new to WPF as well as C#, please bear with me.
我是 WPF 和 C# 的新手，请耐心等待。
I have a main window which opens up a new window. Now this new window is a prompt whether or not to overwrite a file, and the main window accesses a public variable in the new window to check for the prompt's result.
我有一个主窗口，可以打开一个新窗口。现在这个新窗口是一个是否覆盖文件的提示，主窗口访问新窗口中的一个公共变量来检查提示的结果。
But I can't get the main window processing to wait until the new window closes.
但是我无法让主窗口处理等到新窗口关闭。
Window1 Win = new Window1();
Win.Show();
if (Win.pr_res == 1)
{
abc.Text = "File to be overwritten";
File.Delete(_destination);
Start();
}
else
{
abc.Text = "Operation Aborted";
}
I tried adding a while loop checking another public boolean in the main window, but that just hangs the entire program.
我尝试在主窗口中添加一个 while 循环检查另一个公共布尔值，但这只会挂起整个程序。
while(!_closecheck);
Any suggestions are welcome.
欢迎任何建议。
回答by Rohit Vats
Use ShowDialoginstead of Show-
使用ShowDialog而不是Show-
Win.ShowDialog();
From MSDN-
从MSDN-
Opens a window and returns only when the newly opened window is closed.
打开一个窗口并仅在新打开的窗口关闭时返回。
回答by A.K.
Use ShowDialog() method as it Opens a window and returns only when the newly opened window is closed.
使用 ShowDialog() 方法，因为它打开一个窗口并仅在新打开的窗口关闭时返回。
syntax
句法
Win.ShowDialog();
回答by JeffRSon
Although ShowDialogworks fine, you may set MainWindow.IsEnabled = falseif you don't like that modal window. Sometimes it's useful to see the main window.
虽然ShowDialog工作正常，但MainWindow.IsEnabled = false如果您不喜欢该模式窗口，您可以进行设置。有时查看主窗口很有用。
回答by MoisgObg
Instead of using the .Show() property for openning/showing the window, use .ShowDialog() instead :)
不要使用 .Show() 属性打开/显示窗口，而是使用 .ShowDialog() :)
